Meanwhile, the 10 worst apps for hogging data traffic, which automatically run when you turn your phone on, are:

Facebook

Instagram

Yahoo! Japan

Firefox Browser fast & private

The Weather Channel

WhatsApp Messenger

Google Chrome

DU Battery Saver

Facebook Lite

Google Play Home

The 10 worst apps for hogging data traffic, which users run themselves, are:

Netflix

Spotify Music

Snapchat

BBC News

LINE: Free Calls & Messages

Microsoft Outlook

Clean Master

Samsung WatchON

Amazon for Tablets

PicsArt Photo Studio & Collage

If you’re on a limited mobile data plan, the apps listed above are the ones you need to be wary of. Most worrying is the fact that you don’t even need to have the likes of Facebook, Instagram and Chrome open for them to munch through your data.

The 10 worst apps for draining performance, which users run themselves, are:

Samsung WatchON

Google Docs

Samsung Media Hub

SHAREit

Samsung Video Editor

Flipboard

Google Text-to-Speech

Clean Master

LINE: Free Calls & Messages

Adobe Acrobat Reader

“For many of us, our smartphones are the main device in our everyday lives. Knowing which of our favourite apps are the hardest-hitting on battery life, data usage, and storage is important so we can manage any that we are regularly using on our phones,” said Gagan Singh, the SVP and GM of mobile business at Avast.